<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div class=""></div><div class=""><br class=""></div><div class="">It seems that there is a bug in the implementation of the forces for U_projection_type = 'ortho-atomic’, or that some terms have been neglected when computing the derivatives.</div><div class=""><br class=""></div><div class="">In the long run, it might be helpful to include such tests routinely as part of the QE development process.</div><div class=""><br class=""></div><div class="">Best</div><div class="">Max</div></body></html>